According to recent evidence, which drug used to treat migraine headaches has some potential for addiction?
Definition of metabolism for Students. : the processes by which a living organism uses food to obtain energy and build tissue and disposes of waste material.
Energy can neither be created nor destroyed. One usable form of energy cannot be completely converted into another usable form. Metabolism is the sum of all chemical reactions occurring inside a living cell. Every reaction in a cell requires a specific enzyme.